Window-screen



(No Model.) 2 Sheets-Sheet 1. H. WERNLE.

WINDOW SCREEN. No. 47,135 Patented Oct. 1, 1895.

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AN DREW B.GRAHAM. PHOTO-UTNO.WASHINGTON. D C

(No Model.) I 2 Sheets-Sheet 2.

H. WERNLE. WINDOW SCREEN.

Patented Obt. 1,1895. 1%.;

AN DREW BYGRANAM. PHOTDUI'HuWASNI NGTONJI c Z WWW.

llNrrn STAT S" HENRY W'ERNLE, OF PHILADELPHIA, PENNSYLVANIA.

WINDOW- SCREEN.

SPEGIFIGATION forming part of Letters Patent No. 547,135, dated October1, 1895.

Application filed March 10, 1394. Serial No. 503,185. (No model.)

To aZZ whom it may concern.-

Be it known that I, HENRY WERNLE, a citizen of the United States,residing at Philadelphia, (Bridesburg,) Pennsylvania, have inventedcertain new and useful Improvements in \Vindow-Screens; and I doherebydeclare that the following is a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to window-screens and comprises improvements in theconstruction of the screen-frame, as will be hereinafter fully describedand claimed.

In the accompanying drawings, which illustrate my invention and form apart of this specification, Figure 1 represents a front elevationshowing my improved screen in position against the inner surface of thelower sash of a window. Fig. 2 represents a vertical section on the line2 2: in Fig. 1, the view being extended to the top of the Window to showthe mannerof applying the counterbalan cing weight and cord. Fig. 3 is aface view of a segment of an extensible screen-frame provided with alocking-bolt for securing it in different positions. Fig. 4 is avertical transverse section through the lower rail of the screen-frame.Fig. 5 is a similar section, on the line Z) Z) in Fig. 3, through thedouble or telescopic part of the frame; and Fig. 6 is a section on theline 6 6 of Fig. 3.

A designates the window-frame; B B, the upper and lower sashes, mountedin the frame to slide up and down therein and confined and guided byinside and outside beads 1 2 and an intermediate or parting bead 3, allas usual.

0 designates a metallic screen-frame comprising in its preferred formcorner-pieces 4, vertical side bars 5 5, and top and bottom rails 6 6,as shown in Fig.- 1. The cornerpieces 4 are formed of inner and outerplates of thin sheet metal cut into right-angular form, as shown, andplaced and secured to gether face to face. These plates may be stampedup or embossed in any preferred pattern or design to give them anornamental appearance. The top and bottom rails and the side bars arealso formed of inner and outer plates of thin sheet metal corrugatedlongitudinally to give strength and rigidity and laid and securedtogether with the edges of the screen 6 clamped between them and securedin any appropriate manner or by any preferred means as, for example, bysoldering or by Wire fastenings 7, passing through the parts, asrepresented in Fig. 3. The plates forming the top and bottom rails 6 6are beaded along their outer edges, the bead on one plate being open andof a size to receive that on the companion plate, whereby a smoothfinish is given to-the outer edges of said rails. Preferably the femalebead c is somewhat more than semicircular in crosssection and of a sizerelatively to that of the male bead d to closely embrace the latter,sliding one within the other byalongitudinal movement and forming aconnection which secures the edges of the two plates together withoutother fastenings.

For the purpose of securing the screen in adjusted position I provideit, preferably at the bottom, with bolts 15, adapted to be projectedlaterally into suitable notches in the frame. These bolts may be locatedin the hollow beads c d, which unite the parts of the bottom rail, asabove described, or in any of the corrugations ofthe companion plates,the outer ends projecting between the plates of the corner-pieces, andthey may be made to act automatically by springs 16, located behind themin the said beads or corrugations, as indicated by brokenlines in Fig.3. Knobs or stems projecting from the bolts through slots 17 serve as ameans for withdrawing the bolts to release the screen when the latter isto be raised or lowered.

To enable the screen to be conveniently raised and lowered, I provide itwith lift-hooks or buttons 18, which for convenience may be connectedwith the bolts 15, as represented in Fig. 5.

To adapt the screen to be adj nsted to windows of different widths, itis made laterally extensible by dividing the top and bottom rails intotwo sections, which overlap each other, as indicated at the bottom ofFig. 5 by full and broken vertical lines.

While I prefer to join the top and bottom rails of the frame to the sidebars by cornerpieces, as above described, it is manifest that thecorner-pieces may be omitted and the parts mitered together or joined byoverlapping the ends and fastening them together in any approved manner.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A window screen consisting of the combination ofa screen fabric and aframe of rails and side bars composed of inner and outer plates of thincorrugated metal arranged face to face with the screen fabric betweenthem the thin plates of the rails being beaded and telescopically unitedalong their Outer edges substantially as described.

2. A frame for window screens having its HENRY WERNLE. Vitnesses:

SEBASTIAN Ham, GOTTLOB II. BETZ.

